WO2022042574A1 - Bac de batterie et batterie - Google Patents

Bac de batterie et batterie Download PDF

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Publication number
WO2022042574A1
WO2022042574A1 PCT/CN2021/114396 CN2021114396W WO2022042574A1 WO 2022042574 A1 WO2022042574 A1 WO 2022042574A1 CN 2021114396 W CN2021114396 W CN 2021114396W WO 2022042574 A1 WO2022042574 A1 WO 2022042574A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover body
battery
cover
sealing member
pressure
Prior art date
Application number
PCT/CN2021/114396
Other languages
English (en)
Chinese (zh)
Inventor
王永旺
曾玉祥
Original Assignee
珠海冠宇电池股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 珠海冠宇电池股份有限公司 filed Critical 珠海冠宇电池股份有限公司
Publication of WO2022042574A1 publication Critical patent/WO2022042574A1/fr
Priority to US18/055,413 priority Critical patent/US20230076187A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/19—Sealing members characterised by the material
    • H01M50/197—Sealing members characterised by the material having a layered structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
    • H01M50/143—Fireproof; Explosion-proof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
    • H01M50/169—Lids or covers characterised by the methods of assembling casings with lids by welding, brazing or soldering
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
    • H01M50/171—Lids or covers characterised by the methods of assembling casings with lids using adhesives or sealing agents
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/184—Sealing members characterised by their shape or structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/19—Sealing members characterised by the material
    • H01M50/198—Sealing members characterised by the material characterised by physical properties, e.g. adhesiveness or hardness
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the technical field of lithium ion batteries, and in particular, to a battery casing and a battery.
  • Lithium-ion batteries may rupture or even explode due to cell performance problems, or battery operating temperature, short circuit, etc., which seriously endangers the personal safety of users.
  • the purpose of the embodiments of the present application is to provide a battery casing and a battery, which solve the problem of poor explosion-proof effect of the battery casing in the prior art.
  • an embodiment of the present application provides a battery casing, comprising: a first cover body, a second cover body, a sealing member and a casing, the second cover body is welded to the casing, The first cover body is bonded to the second cover body through the sealing member to seal the casing; wherein, the adhesive force between the first cover body and the second cover body is less than The first pressure, where the first pressure is the pressure that the battery casing is subjected to when it explodes.
  • the first pressure is 25N to 200N.
  • the adhesive force is 20N to 100N.
  • both the surface of the first cover body and the surface of the second cover body are covered with a passivation layer, the thickness of the passivation layer is 1 ⁇ m to 3 ⁇ m, and the adhesive force and the passivation layer are proportional to the thickness of the layer.
  • the thickness of the sealing member is 0.1 mm to 0.3 mm, and the adhesive force is proportional to the thickness of the sealing member.
  • the sealing member includes a first metal-philic layer, a base layer and a second metal-philic layer which are stacked in sequence, the first metal-philic layer is bonded to the first cover, and the second metal-philic layer is bonded to the first cover.
  • the metal layer is bonded to the second cover body.
  • the thickness of the first metal-philic layer is 0.05 mm to 0.1 mm
  • the thickness of the base layer is 0.05 mm to 0.1 mm
  • the thickness of the second metal-philic layer is 0.05 mm to 0.1 mm.
  • the area of the sealing member is smaller than the area of the first cover body, and is greater than 2/3 of the overlapping area of the first cover body and the second cover body, and the adhesive force and the The area of the seal is proportional.
  • the outer diameter of the first cover body is 7 mm to 15 mm
  • the outer diameter of the sealing member is 7.5 mm to 15.5 mm
  • the outer diameter of the second cover body is 8 mm to 16 mm.
  • an embodiment of the present application is a battery, including the battery casing provided in the first aspect of the embodiment of the present application.
  • Embodiments of the present application provide a battery casing and a battery, wherein the battery casing includes: a first cover body, a second cover body, a sealing member and a casing, the second cover body is welded to the casing, The first cover body is bonded to the second cover body through the sealing member to seal the casing; wherein, the adhesive force between the first cover body and the second cover body is less than The first pressure, where the first pressure is the pressure that the battery casing is subjected to when it explodes. When the battery explodes, the adhesive layer between the first cover body and the second cover body can be broken to release the gas generated inside the battery casing, so as to prevent the battery casing from continuing to rise to cause explosion.
  • FIG. 1 is a schematic structural diagram of a battery case provided by an embodiment of the application.
  • FIG. 2 is a schematic partial structure diagram of a battery case provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of thermal recombination in a method for manufacturing a battery casing provided by an embodiment of the present application
  • FIG. 4 is a schematic structural diagram of a sealing member in a battery casing provided by an embodiment of the application.
  • FIG. 5 is a partial top plan view of a battery case provided by an embodiment of the present application.
  • an embodiment of the present application provides a battery casing.
  • the battery case includes a first cover 100 , a second cover 200 , a seal 300 and a case 400 , the second cover 200 is welded to the case 400 , and the first cover 100 is connected to the second cover through the seal 300 . 200 is bonded to seal the casing 400; wherein, the bonding force between the first cover 100 and the second cover 200 is less than the first pressure, and the first pressure is the pressure that the battery case is subjected to when it explodes .
  • the first cover body 100, the second cover body 200 and the housing 400 can all be formed of metal materials, such as aluminum, copper, stainless steel, nickel, etc.;
  • the sealing member 300 can be formed of non-metallic insulating materials, specifically, can be made of high temperature resistant Corrosive materials are formed, such as EPDM, fluororubber, PEEK, PFA, etc.
  • the shape of the sealing member 300 may be a sealing ring or a sealing sheet, which is not limited herein.
  • the battery case can be applied to a button battery.
  • the casing 400 may be a cavity with one side open, including a bottom wall and a side wall along the outer edge of the bottom wall.
  • the second cover 200 is covered on the open side of the casing 400 and is connected to the casing. 400 welds.
  • the first cover 100 is bonded to the second cover 200 through the sealing member 300 to seal the casing 400 and achieve insulation.
  • the accommodating chamber of the battery case, the accommodating chamber can be used for accommodating the battery cells.
  • a through hole is formed in the middle of the second cover body 200 , and a position of the first cover body 100 corresponding to the above-mentioned through-hole protrudes toward the direction of the second cover body 200 to form a protrusion adapted to the above-mentioned through-hole
  • the sealing member 300 can be sleeved on the outer wall of the protruding portion, and the protruding portion can be embedded in the through hole.
  • One tab of the battery cell accommodated in the accommodating chamber can extend out of the above-mentioned through hole to be welded to the first cover 100 , and the other tab can be welded to the casing 400 .
  • Lithium-ion batteries may explode due to cell performance issues, battery operating temperature, or short-circuiting of cells.
  • an explosion-proof groove is usually formed on the battery casing to achieve an explosion-proof effect.
  • the groove of the explosion-proof groove if the groove of the explosion-proof groove is too deep, the mechanical strength of the battery casing may be insufficient; The groove of the groove is too shallow, and the explosion-proof groove can only be broken through when the internal pressure of the battery casing is very large, which does not have a good explosion-proof effect.
  • the first cover body 100 and the second cover body 200 are bonded by extruding the sealing member 300 through thermal compound processing.
  • the parameters of the sealing member 300 and the thermal compounding parameters can be adjusted to adjust the adhesive force between the first cover body 100 and the second cover body 200 to be lower than the first pressure, That is, the pressure that the battery is subjected to when it explodes.
  • the battery casing when the battery is in normal use, the battery casing can be sealed by the first cover 100, the second cover 200, the seal 300 and the casing 400, and the strength is stable; when the battery is abnormally used, the battery Under the condition that the internal pressure of the casing gradually increases, when the internal pressure of the battery casing reaches the first pressure, the adhesive layer between the first cover 100 and the second cover 200 can be broken to release the gas to avoid explosion due to the continued increase in the internal pressure of the battery casing.
  • the first cover body 100 can be placed in the thermal compound head A
  • the second cover body 200 can be placed in the thermal compound head B
  • the sealing member 300 can be placed in the first
  • the head A and the head B can drive the first cover 100 and the second cover 200 to squeeze the sealing member 300 respectively
  • the temperature of the head A and the head B can be quickly Melt the sealing member 300 to realize the bonding between the first cover 100 and the second cover 200.
  • the adhesion between the first cover 100 and the second cover 200 can be measured by a tensile force tester. Relay is measured.
  • the first cover body 100 is bonded to the second cover body 200 through the sealing member 300 to seal the casing 400, and the adhesive force between the first cover body 100 and the second cover body 200 is smaller than that of all the The pressure on the battery case when it explodes, and when the battery fails, the adhesive layer between the first cover 100 and the second cover 200 can be broken to release the gas generated inside the battery case and avoid the battery The internal pressure of the shell continued to rise and an explosion occurred.
  • the first pressure is 25N to 200N.
  • the adhesive force is 20N to 100N.
  • the first pressure that is, the maximum pressure that the battery case is subjected to when it explodes
  • the first pressure can be obtained by performing an explosion experiment on the battery case.
  • the internal pressure changes are measured and recorded, and the battery shell is subjected to explosion experiments by heating and other methods to record the internal pressure value before the battery shell explodes.
  • the first pressure can be determined to be 25N to 200N. Further, the adhesive force may be determined to be 20N to 100N.
  • the adhesive force between the first cover body 100 and the second cover body 200 can be adjusted by adjusting the parameters of the sealing member 300 and the parameters of thermal compounding, and the tensile force can be adjusted.
  • the tester measures the adhesive force to control it to be less than the first pressure.
  • the above-mentioned parameters of the sealing member 300 may include the area of the sealing member 300, the thickness of the sealing member 300, and the contact area between the sealing member 300 and the first cover 100, and the above-mentioned parameters of thermal compounding may include the temperature, pressure, and time of thermal compounding.
  • the first cover and the second cover can be adjusted. Adhesion between lids.
  • the adhesive force is proportional to the thermal recombination temperature.
  • the adhesive force at a thermal compounding temperature of 150°C is greater than that at a thermal compounding temperature of 135°C.
  • the temperature of the thermal compounding needs to be higher than the melting point of the sealing element 300, so that the sealing element 300 can be rapidly melted; and in order to prevent the sealing element 300 from melting excessively, the starting temperature of the thermal compounding can be controlled at a temperature of the sealing element 300. Then, the temperature of thermal compounding can be gradually increased, and then the adhesive force between the first cover body 100 and the second cover body 200 can be gradually increased.
  • the adhesive force is proportional to the pressure of the thermal compounding.
  • the adhesive force under the thermal compounding pressure of 180N is greater than that under the thermal compounding pressure of 130N.
  • the thermal compounding pressure can be gradually increased in the range of 100N to 500N, and then the adhesive force between the first cover body 100 and the second cover body 200 can be gradually increased.
  • both the surface of the first cover body 100 and the surface of the second cover body 200 are covered with a passivation layer, the thickness of the passivation layer is 1 ⁇ m to 3 ⁇ m, and the adhesion between the adhesive force and the passivation layer is proportional to the thickness.
  • passivation treatment may be performed on the surface of the first cover body 100 and the surface of the second cover body 200, so that the first cover body 100 and the surface of the second cover body 200 are passivated.
  • the surface of the cover body 100 and the surface of the second cover body 200 form a passivation layer.
  • the passivation layer can improve the corrosion resistance of the first cover 100 and the second cover 200, and can improve the strength of the first cover 100 and the second cover 200 to a certain extent, so that when the battery explodes, the When the adhesive layer between the first cover 100 and the second cover 200 is punched open, the first cover 100 and the second cover 200 will not burst.
  • the thickness of the passivation layer is 1 ⁇ m to 3 ⁇ m, and the adhesive force is proportional to the thickness of the passivation layer.
  • the adhesion when the passivation layer is 2.3 ⁇ m is greater than the adhesion when the passivation layer is 1.4 ⁇ m.
  • the thickness of the formed passivation layer can be controlled by controlling parameter values such as time, temperature, acidity ratio, etc. during the passivation process, and then the first cover body 100 and the second cover can be adjusted accordingly. Adhesion between the bodies 200 .
  • the thickness of the sealing member 300 is 0.1 mm to 0.3 mm, and the adhesive force is proportional to the thickness of the sealing member 300 .
  • the thickness of the sealing member 300 refers to the thickness of the sealing member 300 before being squeezed and melted.
  • the thickness of the sealing member 300 is 0.1 mm to 0.3 mm, and within this range, the adhesive force is proportional to the thickness of the sealing member 300 . It can also be understood in this way that during the thermal compounding process, changes in parameters such as temperature and pressure of thermal compounding can cause the sealing member 300 of the same thickness to exhibit different extrusion degrees, thereby affecting the adhesive force.
  • the sealing member 300 includes a first metal-philic layer 310 , a base layer 320 and a second metal-philic layer 330 that are stacked in sequence, and the first metal-philic layer 310 is bonded to the first cover 100 .
  • the second metal-philic layer 330 is bonded to the second cover body 200 .
  • the sealing member 300 can be made of three layers of materials. As shown in FIG. 4 , the sealing member 300 can be formed by stacking a first metal-philic layer 310 , a base layer 320 and a second metal-philic layer 330 in sequence.
  • the first metal-philic layer 310 and the second metal-philic layer 330 are both metal-philic materials, and their melting points can range from 100°C to 400°C.
  • the thermal recombination temperature is slightly higher than that of the first metal-philic layer 310 and the The melting point of the second metal-philic layer 330 can make the first metal-philic layer 310 and the second metal-philic layer 330 melt rapidly;
  • the melting point is relatively high, which may be higher than 400° C., to ensure that the base layer 320 will not melt during the thermal compounding process, and an adhesive layer will be formed between the first cover 100 and the second cover 200 .
  • the thickness of the first metal-philic layer is 0.05 mm to 0.1 mm
  • the thickness of the base layer is 0.05 mm to 0.1 mm
  • the thickness of the second metal-philic layer is 0.05 mm to 0.1 mm.
  • the area of the sealing member 300 is smaller than the area of the first cover body 100 , and is greater than 2/3 of the overlapping area of the first cover body 100 and the second cover body 200 , the adhesive force and the area of the sealing member 300 proportional.
  • the area of the sealing member 300 can be understood as the contact area between the sealing member 300 and the first cover 100 and the second cover 200 . It should be noted that the area of the sealing member 300 refers to the area before the sealing member 300 is squeezed and melted. area.
  • the adhesive force and the sealing proportional to the area of the piece 300 when the area of the sealing member 300 is smaller than the area of the first cover body 100 and greater than 2/3 of the overlapping area of the first cover body 100 and the second cover body 200 , the adhesive force and the sealing proportional to the area of the piece 300.
  • Table 4 exemplarily, on the premise of other factors being the same, when the contact area between the sealing member 300 and the first cover 100 is 5.2 mm 2 , the adhesive force is greater than that between the sealing member 300 and the first cover 100 . 100 Adhesion when the contact area is 4.5mm2 .
  • the adhesive force between the first cover body 100 and the second cover body 200 can be adjusted by changing the area of the sealing member 300 .
  • the outer diameter of the first cover body 100 is 7 mm to 15 mm
  • the outer diameter of the sealing member 300 is 7.5 mm to 15.5 mm
  • the outer diameter of the second cover body 200 is 8 mm to 16 mm.
  • the first cover body 100 and the second cover body 200 are both round cakes
  • the sealing member 300 is a sealing ring
  • the first cover body 100 and the second cover body 200 are squeezed and sealed.
  • the outer diameter of the first cover body 100 is smaller than or equal to the outer diameter of the sealing component 300
  • the outer diameter of the sealing component 300 is smaller than or equal to the outer diameter of the second cover body 100 .
  • the battery case includes: a first cover body, a second cover body, a seal and a casing, the second cover body is welded to the casing, and the first cover body is welded to the casing.
  • the cover body is bonded with the second cover body through the sealing member to seal the casing; wherein, the bonding force between the first cover body and the second cover body is smaller than the first pressure,
  • the first pressure is the pressure that the battery casing is subjected to when it explodes.
  • the adhesive layer between the first cover body and the second cover body can be broken to release the gas generated inside the battery casing, so as to prevent the battery casing from continuing to rise to cause explosion.
  • An embodiment of the present application further provides a battery, the battery includes the battery casing provided by the embodiments shown in FIG. 1 to FIG. 5 .
  • the battery may be a button battery, and the battery includes the battery casing provided in the embodiment shown in FIG. 1 to FIG. 5 , and a battery cell.
  • the battery casing is filled with electrolyte, and the The battery cell is accommodated in the battery casing.
  • the first cover body of the battery case is bonded to the second cover body through a sealing member to achieve insulation.
  • a through hole may be opened in the middle of the second cover body, and a position of the first cover body corresponding to the through hole protrudes toward the direction of the second cover body to form a protrusion adapted to the through hole,
  • the sealing member can be sleeved on the outer wall of the protruding portion, and the protruding portion can be embedded in the through hole.
  • One tab of the battery cell accommodated in the accommodating chamber can extend out of the through hole to be welded to the first cover, and the other tab can be welded to the casing.
  • the cell may be a laminated cell or a wound cell.
  • the wound cell is formed by stacking a positive electrode sheet, a first separator sheet, a negative electrode sheet and a second separator sheet in sequence and then winding, and a cavity is formed in the center of the wound cell.
  • Corresponding tabs are extended from the positive electrode sheet or the negative electrode sheet. Wherein, one tab can extend out of the above-mentioned through hole to be welded with the first cover body, and the other tab can be welded with the casing.
  • the first separator sheet and the second separator sheet are located between the positive electrode sheet and the negative electrode sheet to insulate and prevent the short circuit of the cell.
  • the laminated cell can be formed by cyclically stacking positive electrode sheets, separator sheets and negative electrode sheets in sequence, and the separator sheet is provided between each adjacent positive electrode sheet and negative electrode sheet to insulate and prevent the short circuit of the cells. At least one positive electrode tab extends from each positive electrode sheet, and at least one negative electrode tab extends from each negative electrode sheet.
  • the battery includes all the technical features of the battery case provided by the embodiment shown in FIG. 1 to FIG. 5 , and can realize the battery provided by the embodiment shown in FIG. 1 to FIG. 5 . All technical effects that can be achieved by the shell are not repeated here in order to avoid repetition.
  • the terms “installed”, “connected” and “connected” should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication between the two components.
  • installed should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication between the two components.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Gas Exhaust Devices For Batteries (AREA)

Abstract

L'invention concerne un bac de batterie et une batterie. Le bac de batterie comprend un premier corps de couvercle, un second corps de couvercle, un élément d'étanchéité et un corps de bac ; le second corps de couvercle est soudé au corps de bac ; le premier corps de couvercle est collé au second corps de couvercle au moyen de l'élément d'étanchéité, de façon à sceller le corps de bac ; et l'adhérence entre le premier corps de couvercle et le second corps de couvercle est inférieure à une première pression, et la première pression est une pression portée par le bac de batterie lorsque le bac de batterie explose. Lorsqu'une batterie explose, une couche adhésive entre le premier corps de couvercle et le second corps de couvercle peut être rompue, de manière à libérer le gaz généré à l'intérieur du bac de batterie, ce qui permet d'éviter une augmentation supplémentaire de la pression interne du bac de batterie qui provoque l'explosion.
PCT/CN2021/114396 2020-08-28 2021-08-24 Bac de batterie et batterie WO2022042574A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US18/055,413 US20230076187A1 (en) 2020-08-28 2022-11-15 Battery housing and battery

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010885446.2A CN111900276A (zh) 2020-08-28 2020-08-28 一种电池外壳及电池
CN202010885446.2 2020-08-28

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/055,413 Continuation US20230076187A1 (en) 2020-08-28 2022-11-15 Battery housing and battery

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WO2022042574A1 true WO2022042574A1 (fr) 2022-03-03

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US (1) US20230076187A1 (fr)
CN (1) CN111900276A (fr)
WO (1) WO2022042574A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113013524B (zh) * 2021-02-23 2023-06-20 珠海冠宇电池股份有限公司 电池外壳及电池
CN111900276A (zh) * 2020-08-28 2020-11-06 珠海冠宇电池股份有限公司 一种电池外壳及电池

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202395058U (zh) * 2011-12-16 2012-08-22 深圳市雄韬电源科技股份有限公司 一种环形电池
CN111029487A (zh) * 2019-12-31 2020-04-17 广东微电新能源有限公司 高能量密度电池
CN111162228A (zh) * 2019-12-31 2020-05-15 广东微电新能源有限公司 防爆电池
CN211238301U (zh) * 2020-03-18 2020-08-11 珠海冠宇电池股份有限公司 一种密封壳体结构及电池
CN111900276A (zh) * 2020-08-28 2020-11-06 珠海冠宇电池股份有限公司 一种电池外壳及电池

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0081339A3 (fr) * 1981-12-04 1983-09-14 Venture Technology Limited Fermeture étanche de piles électrochimiques

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202395058U (zh) * 2011-12-16 2012-08-22 深圳市雄韬电源科技股份有限公司 一种环形电池
CN111029487A (zh) * 2019-12-31 2020-04-17 广东微电新能源有限公司 高能量密度电池
CN111162228A (zh) * 2019-12-31 2020-05-15 广东微电新能源有限公司 防爆电池
CN211238301U (zh) * 2020-03-18 2020-08-11 珠海冠宇电池股份有限公司 一种密封壳体结构及电池
CN111900276A (zh) * 2020-08-28 2020-11-06 珠海冠宇电池股份有限公司 一种电池外壳及电池

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